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Home/Practice quizzes/Combination air brakes

Combination air brakes practice quiz

Choose an answer, read the explanation, then continue to the next question. Your results include a review of every answer.

Combination air brakesQuestion 14 of 200
Correct14%2 of 14 answered
Incorrect86%12 of 14 answered

Why is service air pressure alone unsuitable for parking?

AAir pressure cannot exceed 20 psi while parked
BParking force must be mechanical and remain effective after air lossYour answerCorrect answer
CService pressure cannot operate rear brakes
Correct.

Leaks can release air-applied brakes, so legal parking force must be maintained mechanically. (Guide p. 160)

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Study aid only. These are not official ICBC exam questions, and practice scores do not predict an official test result.